CAJ | 학술논문

在传统方案中，直接采用简单最低有效位（LSB）嵌入秘密信息，导致隐写图像失真度较高，为此提出一种高效的可验证秘密共享方案。引入差分哈夫曼无损压缩思想，将产生的比特序列作为秘密共享的输入；通过改进插值多项式和认证值计算公式，增强隐写图像的质量并提高其可验证性。理论分析与实验结果表明，应用该方案可得到高质量的隐写图像，其具有高效可验证性和安全性。
재전통방안중，직접채용간단최저유효위（LSB）감입비밀신식，도치은사도상실진도교고，위차제출일충고효적가험증비밀공향방안。인입차분합부만무손압축사상，장산생적비특서렬작위비밀공향적수입；통과개진삽치다항식화인증치계산공식，증강은사도상적질량병제고기가험증성。이론분석여실험결과표명，응용해방안가득도고질량적은사도상，기구유고효가험증성화안전성。
Greater distortion of image steganography was caused by applying the simple least significant bit (LSB) to embed se‐cret information directly in the traditional technology .Therefore ,an efficient verifiable secret sharing method was proposed .A bit sequence was taken as the input of secret sharing which was generated using differential Huffman lossless compression of se‐cret image .The polynomial interpolation and certified value formula were improved .As a result ,the quality of the stego image and the verifiability were enhanced using the technology .Theoretical analysis and experimental results show that high quality of stego image with efficient verifiability and security can be obtained through the scheme .